Mitsubishi MELSEC-Q Series User Manual page 253

13 TROUBLESHOOTING
Error code
Error details
(hexadecimal)
Intelligent device station setting
B38C
error (parameter)
Invalid station specified error
B38D
(parameter)
Communication buffer
B38E
assignment error
Automatic update buffer
B38F
assignment error
Standby master station
B390
specification error (parameter)
Retry count setting error
B391
(parameter)
Operation when CPU is down
B392
specified error (parameter)
Scan mode specification error
B393
(parameter)
Number of automatic return
B394 stations setting error
(parameter)
Station number overlap error
B396
(parameter)
Station information setting error
B397
(parameter)
Number of occupied stations
B398
setting error (parameter)
Number of connected modules
B399
setting error (parameter)
Standby master station
B39A
specification error (loading
status)
B39B Reserved station setting error
Standby master station setting
B39C
error
B401 Parameter change error
B404 Response error
Transient applicable station
B405
error
Interlock signal data outside of
B414
range
13 - 12
Table 13.1 Error code list (3/5)
Cause of error occurrence (details)
The number of intelligent device stations
(including local stations) was set to "27
stations or more" with the station
information parameter.
"Other than module head station
number" or "station number not specified
in the parameter" was set with the invalid
station specification parameter.
<Example of other than head station
number>
A bit other than that for station number 5
was ON for a module occupying 4
stations (station numbers 5 to 8).
The total size of the communication
buffers in the station information
parameter exceeded 4 k words.
The total size of the automatic update
buffer in the station information
parameter exceeded 4 k words.
The standby master station parameter
was set to a value other than "1 to 64".
The retry count parameter was set to a
value other than "1 to 7".
The operation when the CPU is down
specification parameter was set to a
value other than "0 or 1".
The scan mode parameter was set to a
value other than "0 or 1".
The number of automatic return stations
parameter was set to a value other than
"1 to 10".
A duplicate station number was specified
with the station information parameter.
The station information parameter setting
does not meet the following condition:
C) < 2304
(16 4) + (54 B) + (88
A: Number of remote I/O stations
B: Number of remote device stations
C: Number of intelligent device stations
(including local stations)
The number of occupied stations in the
station information parameter was set to
a value other than "1 to 4".
The number of connected modules
parameter was set to a value other than
"1 to 64".
The remote net ver. 2 mode/remote net
additional mode has been set to the
master station of the QJ61BT11.
The station number set with the station
number setting switches of the standby
master station differs from that set in the
"standby master station No." network
parameter of the master station, or the
station set in the "standby master station
No." network parameter of the master
station is a local station.
All stations were set as reserved stations.
The station number designated for the
standby master station is specified to a
station other than an intelligent device
station.
Parameter change was executed during
transient request.
A response from the requested station
was not returned within the watchdog
time period.
A transient request was made to a
remote I/O station or a remote device
station.
The setting of the interlock signal storage
device of the RIRCV or RISEND
instruction is outside the setting range.
Corrective action
Set the intelligent device station
to "26 stations or less" with the
station information parameter.
Set the "Head station number of
the module".
Do not specify any of the
stations not specified with the
parameter.
Set the total size of the
communication buffers to 4 k
words or less.
Set the total size of the
automatic update buffer to 4 k
words or less.
Specify the standby master
station to a value within the
range from "1 to 64".
Set a value within the range
from "1 to 7".
Set "0 or 1".
Set "0 or 1".
Set a value within the range
from "1 to 10".
Set so that station numbers are
not duplicated.
Set the parameter so that it
meets the condition shown on
left.
Set a value within the range
from "1 to 4".
Set a value within the range
from "1 to 64".
Set to the remote net ver. 1
mode/remote I/O net mode.
Change the parameter setting
of the master station, or change
the station number setting of
the local/standby master
station, and then reset the PLC
CPU of the local/standby
master station.
Check the reserved station
settings.
Specify the standby master
station as an intelligent device
station.
Change the parameter after all
transient requests are
completed or before any are
requested.
Set a longer watchdog time. If
an error persists, check the
requested module and cables.
Set the corresponding station to
a local station or an intelligent
device station.
Change the setting of the
interlock signal storage device
to within the setting range.
MELSEC-Q
Detectability
Master station Local station
13 - 12